MOTOR AS 2299137 - Caterpillar

When testing and adjusting the transmission and power train, move the machine to an area clear of obstructions, with safe exhaust ventilation for the exhausts. Sudden movement of the machine or release of oil under pressure can cause injury to persons on or near the machine. To prevent possible injury, do the procedure that follows before testing and adjusting the transmission and power train.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the machine. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Dispose of all fluids according to local regulations and mandates.
Before you begin the test, refer to Systems Operation, Testing and Adjusting, "Machine Preparation for Troubleshooting".
Table 1
Required Tools
Part Number Description Quantity
1U-5482 Pressure Adapter Group 1
8T-0856 Pressure Gauge (0 to 6,000 kPa (0 to 870 psi)) 1
Operate the machine until the transmission oil is at operating temperature of 51 °C (124 °F).
Stop the machine on a hard level surface. Engage the parking brake. Turn the engine OFF.
Illustration 1 g01211129
View of the differential lock valve
(1) Test port
Remove the dust cap. Attach 8T-0856 Pressure Gauge (0 to 6,000 kPa (0 to 870 psi)) to test port (1).
Remove the differential drive shaft. Operate the machine in first gear forward at high idle. Engage the differential lock valve. The gauge should read a minimum of 2620 kPa (380 psi).
Stop the machine. Turn the engine OFF and install the differential drive shaft. Remove the test equipment.